Cryptology ePrint Archive: Report 2009/400

Identity-Based Chameleon Hash Scheme Without Key Exposure

Xiaofeng Chen and Fangguo Zhang and Haibo Tian and Kwangjo Kim

Abstract: In this paper, we propose the first identity-based chameleon hash
scheme without key exposure, which gives a positive answer for the open problem introduced by Ateniese and de Medeiros in 2004.